RosettaCodeData/Task/Priority-queue/Logtalk/priority-queue-2.logtalk

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:- object(minheap,
extends(heap(<))).
:- info([
version is 1:0:0,
author is 'Paulo Moura.',
date is 2010-02-19,
comment is 'Min-heap implementation. Uses standard order to compare keys.'
]).
:- end_object.
:- object(maxheap,
extends(heap(>))).
:- info([
version is 1:0:0,
author is 'Paulo Moura.',
date is 2010-02-19,
comment is 'Max-heap implementation. Uses standard order to compare keys.'
]).
:- end_object.